A short text file that email users can automatically append at the end of each message they send. Commonly, signature files list the user’s name, phone number, company, company URL, etc.

Building a Highly-targeted Opt in List: When Money Lies Beneath the Lists
Are you successful with your Internet business? Better yet, do you think you are successful with your online business? When most online entrepreneurs are asked with these questions, they often brush it off.